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  1. lLouie

    Fatigue Test of Metal Parts

    This is a project. I have such a task and I'm searching. I know that there is no any standard. Aircraft can have many mission profiles. For example, I observed that the aircraft was exposed to 2g loads during a mission, and I tested it accordingly. What will happen if the aircraft experiences...
  2. lLouie

    Fatigue Test of Metal Parts

    You are right. The most critical aspect is to accurately determine these loads and understand how they should be applied. Various configurations may occur in the aircraft, each potentially leading to different loading conditions.
  3. lLouie

    Fatigue Test of Metal Parts

    Structure
  4. lLouie

    Fatigue Test of Metal Parts

    Firstly, thank you for the answer. In order to perform a fatigue test on the component, it is essential to acquire the in-flight g-load data acting on the part. However, different flight configurations may result in varying g-load profiles. For example, during one flight the load may fluctuate...
  5. lLouie

    Fatigue Test of Metal Parts

    Hi, As is well known, not every part of an aircraft is subjected to the same g-forces. I have previously opened many topics related to fatigue testing, and thanks to your help, I’ve achieved very good results. First of all, I would like to thank all of you. As I mentioned, different parts of...
  6. lLouie

    Fatigue Model for Composites

    Hi, First of all, I would like to thank all the valuable forum users who respond to every question I ask. Thanks to you, I’ve made good progress regarding fatigue. I had asked a short question about the fatigue analysis of composites. After doing a bit more research, I’ve gathered some...
  7. lLouie

    Corossion Fatigue

    Thank you
  8. lLouie

    Corossion Fatigue

    I just want to see the effect of corrosion on life. I can't get a test done, so I'm just trying to figure it out by changing the surface roughness in the analysis program.
  9. lLouie

    Corossion Fatigue

    Thank you so much. Fatigue is already a difficult issue on its own, and corrosion is included, it becomes even more complicated. :)
  10. lLouie

    Corossion Fatigue

    Hi, Corrosion has a significant effect on the fatigue of metals. I cannot simulate it directly in the fatigue analysis software, but I am able to modify the surface roughness of the material. How much does surface roughness typically increase after corrosion (as a percentage)? Ideally, I...
  11. lLouie

    Subsonic vs. Supersonic Fatigue

    Yes, you are right. As the aircraft accelerates, the temperature will also increase. Therefore, the g loads on the wing will also be very different. As a result, it is necessary to examine both situations separately in detail.
  12. lLouie

    Subsonic vs. Supersonic Fatigue

    Yes, are thermal effects significant for both cases, or when going from subsonic to supersonic? I'm looking at the metal parts which are in the wings.
  13. lLouie

    Subsonic vs. Supersonic Fatigue

    Subsonic Flight: Fatigue is primarily dominated by high-cycle fatigue (HCF) due to repetitive low-stress loading. The absence of extreme thermal fluctuations reduces the impact of thermal fatigue, leading to a longer material lifespan. Supersonic Flight: More severe low-cycle fatigue (LCF)...
  14. lLouie

    Bushing Contact

    There is a bushing between the pin and the part. I am loading the part up and down. Therefore, I expect stresses to occur in the hole area of the part, but I am not sure which contact type I should give between the bushing and the part in Ansys. I think that if I give Bonded, it will not reflect...
  15. lLouie

    Aircraft - Fatigue Load Spectrum

    Thank you so much. Thanks to you, I solved my problems :)
  16. lLouie

    Aircraft - Fatigue Load Spectrum

    Does maneuver time have any significance for fatigue life? For example, will it make a difference in damage if an aircraft moving at 5g cruise reaches 6g in 10 seconds or 5 seconds? After all, it will have completed 1 cycle from 5g to 6g.
  17. lLouie

    Aircraft - Fatigue Load Spectrum

    Thank you, I will look at
  18. lLouie

    Aircraft - Fatigue Load Spectrum

    It will be unlimited re-use, recoverable. Thanks sharing for the source.
  19. lLouie

    Aircraft - Fatigue Load Spectrum

    You are right, it's weigh is too much. Almost 5.5 tonne.
  20. lLouie

    Aircraft - Fatigue Load Spectrum

    Thank you very much. It is totally up to me. I will continue to search.

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